393640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{757}}^1$

素因数の和:781

約数の個数: 32

約数和(自身を含む): 955080

約数和(自身を除く): 561440

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 757, 1514, 3028, 3785, 6056, 7570, 9841, 15140, 19682, 30280, 39364, 49205, 78728, 98410, 196820, 393640]

約数ペア:

[(1, 393640), (2, 196820), (4, 98410), (5, 78728), (8, 49205), (10, 39364), (13, 30280), (20, 19682), (26, 15140), (40, 9841), (52, 7570), (65, 6056), (104, 3785), (130, 3028), (260, 1514), (520, 757)]